/*
 * Copyright 2019-2029 geekidea(https://github.com/geekidea)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.chaochis.springboottestdemo.config.webConfig.typeConvert;

import org.apache.commons.lang3.StringUtils;
import org.springframework.core.convert.converter.Converter;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class StringToDateConverter implements Converter<String, Date> {

	private static final DateFormat[] dateFormats = {
		new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:S"),
		new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"),
		new SimpleDateFormat("yyyy-MM-dd HH:mm"),
		new SimpleDateFormat("yyyy-MM-dd HH"),
		new SimpleDateFormat("yyyy-MM-dd"),
		new SimpleDateFormat("yyyy-MM")
	};

	@Override
	public Date convert(String source) {
		if (StringUtils.isBlank(source)){
			return null;
		}
		source = source.trim();

		try{
			int timeLength = source.length();
			long time = Long.parseLong(source);
			if (timeLength == 10){
				time = time * 1000;
			}
			Date date = new Date(time);
			return date;
		}catch (Exception e){

		}

		Date date = null;
		boolean flag = false;
		for (DateFormat dateFormat : dateFormats) {
			try {
				date = dateFormat.parse(source);
				flag = true;
				break;
			} catch (ParseException e) {
				 e.printStackTrace();
			}
		}

		if (flag) {
			return date;
		}else{
			throw new IllegalArgumentException("不能解析日期:" + source);
		}
	}
}
